International Symposium on Transient Convective Heat Transfer
DOI: 10.1615/ICHMT.1996.TransientConvHeatTransf
ISBN Print: 978-1-56700-084-9
INSTABILITIES IN THE THERMAL ENTRANCE REGION OF A COUNTER-CURRENT HORIZONTAL HEAT EXCHANGER - EXPERIMENTAL APPROACH -
DOI: 10.1615/ICHMT.1996.TransientConvHeatTransf.450
SINOPSIS
Experimental studies are presented to put in obviousness the effect of combined natural and forced convection in horizontal pipe cooled by uniform flux. The experimental is undertaking in a coaxial counter-current heat exchanger. Temperature profiles show the influence of buoyancy forces and radial conduction. In steady state we deal with temperature fluctuations along the internal tube of the heat exchanger du to the combined of mixed convection and radial conduction. In order to characterize the amplitude and frequency of temperature fluctuations, frequency analysis was presented.